Colons have one of the best jobs: they are the last stop in turning your food to poop. It recycles extra water and electrolytes from undigestible food. If food gets stuck there too long (like when you are constipated), it will be drier and harder to get out of your body. If food doesn't stay in the Colon for long enough (like when you have diarrhea), your poop will be more watery.